Tag Archive: maths

Building a 3D Printer from a microscope – Part 1


I’ve jumped on the 3D printer wave, intending to build my own RepRap inspired 3D printer. I’ve found an old microscope platform to customize. This platform has an XY-table and a precise Z axis. I wanted to spend time building my own 3d printer, but not all of my time. I wanted to get better …

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Servo tester by 555 timer

I needed a servo tester for my workshop, to have at hand whenever I change servo horns or need to see if a servo is dead. I decided to use a 555 timer to do this.

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Using LDO as an adjustable voltage supply

I came across this Low DropOut voltage chip and figured I would use it as an adjustable voltage source. All it required was a trimpot, a capacitor and a resistor.

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Android Accelerometer App

This entry describes a quick and dirty way of displaying accelerometer data on an android device. The application outputs the applied force as a circle, where the radius of the circle represents the magnitude of the force vector, with the gravity subtracted. It also demonstrates the difference between a shifting buffer and a ring buffer.

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